A documentary crew sails upriver chasing myth and finds Jon Voight instead. Lopez leads with conviction the film does not deserve, her camera operator capturing snakes and hubris in equal measure. The anaconda arrives as promised, a rubber nightmare given CGI breath, consuming cast members who increasingly seem to understand their purpose. Rainforest humidity beads on every surface; the atmosphere sweats desperation. Voight's Paraguayan accent wobbles between menace and parody, yet he commits with such reptilian glee that the snake becomes redundant.